PlantPeers
Back to Catalog
Clerodendrum japonicum
Lamiaceae FAMILY Least Concern

Clerodendrum japonicum

Clerodendrum japonicum

Edibility
2/5
Medicinal
3/5

Safety & Hazards

None known

Cultivation Details

HabitDeciduous Shrub
Growth—

Clerodendrum japonicum grows wild from the warm temperate zone to the tropics od eastern Asia. It is not a very cold-hardy plant, being able to tolerate short periods where temperatures fall to around -3°c. Succeeds in a sunny position in ordinary garden soil[1, 2] but prefers a fertile humus-rich well-drained soil[3, 2]. The soil must not be allowed to dry out in the growing season[1]. Requires a position sheltered from cold drying winds[1, 2]. A very ornamental plant[1]. Flowers are produced on the current seasons growth and so, to encourage flowering, any pruning is best carried out when the plant is dormant[2].

Propagation

Seed - best sown as soon as possible in a greenhouse. Germination can be erratic but usually takes place within 20 - 60 days at 20°c[3]. When large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out in late spring or early summer after the last expected frosts. Root cuttings, 6 - 8cm long, December in a greenhouse. High percentage[4]. Division of suckers in the dormant season. Very easy, they can be planted out direct into their permanent positions if required. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-20. <temperate.theferns.info/plant/Clerodendrum+japonicum>

Pollinators

Lepidoptera, Bees

References

  1. [1]RHS Dictionary of Plants plus Supplement. 1956 — F. Chittendon. · Oxford University Press · 1951 · ISBN - ↩︎Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [ 200 ]).
  2. [2]The New RHS Dictionary of Gardening. 1992. — Huxley. A. · MacMillan Press · 1992 · ISBN 0-333-47494-5 ↩︎Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
  3. [3]Growing from Seed. Volume 4. — Bird. R. (Editor) · Thompson and Morgan. · 1990 · ISBN - ↩︎Very readable magazine with lots of information on propagation. A good article on Yuccas, one on Sagebrush (Artemesia spp) and another on Chaerophyllum bulbosum.
  4. [4]Propagation of Trees, Shrubs and Conifers. — Sheat. W. G. · MacMillan and Co · 1948 · ISBN - ↩︎A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
  5. [5]Flora of China — Missouri Botanical Garden Press; St. Louis. · 1994 · http://flora.huh.harvard.edu/china/ ↩︎An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
  6. [6]Mansfeld's Database of Agricultural and Horticultural Plants — http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336 ↩︎Terse details of a huge range of useful plants.
  7. [7]Clerodendrum (Lamiaceae) in Borneo — Wearn J.A. & Mabberley D.J. · 2011 · http://10.16(X)/036364411X605056 ↩︎
  8. [8]IUCN Red List of Threatened Species — http://www.iucnredlist.org/ ↩︎A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
  9. [9]Tropical Flowering Plants. A Guide to Identification and Cultivation. — Llamas K.A. · Timber Press; Oregon. · 2003 · ISBN 0-88192-585-3 ↩︎A terse guide for the gardener to almost 1,500 species of ornamental tropical plants with brief details on their cultivation and, usually, a small photograph of good quality.
  10. [10]Plants and People of Nepal — Manandhar. N. P. · Timber Press. Oregon. · 2002 · ISBN 0-88192-527-6 ↩︎Excellent book, covering over 1,500 species of useful plants from Nepal together with information on the geography and peoples of Nepal. Good descriptions of the plants with terse notes on their uses.
  11. [11]Plants for Human Consumption. — Kunkel. G. · Koeltz Scientific Books · 1984 · ISBN 3874292169 ↩︎An excellent book for the dedicated. A comprehensive listing of Latin names with a brief list of edible parts.
  12. [12]Medicinal Plants of China — Duke. J. A. and Ayensu. E. S. · Reference Publications, Inc. · 1985 · ISBN 0-917256-20-4 ↩︎Details of over 1,200 medicinal plants of China and brief details of their uses. Often includes an analysis, or at least a list of constituents. Heavy going if you are not into the subject.
  13. [13]Plant Resources of Southeast Asia — http://proseanet.org/ ↩︎Lots of information on the uses of the plants of SE Asia.
  14. [14]Philippine Medicinal Plants — http://www.stuartxchange.org/CompleteList.html ↩︎A lovely site, giving brief details on the medicinal uses of several hundred (over 400 at the last count) plants in the Philippines, plus a picture of each plant.
  15. [15]Medicinal Plants of Vietnam, Cambodia and Laos. — Nguyen Van Duong · Mekong Printing; Vietnam (Printers) · 1993 · ISBN 0-9837303-1-2 ↩︎Published by the author, this is an excellent book on the medicinal attributes of plants growing in the area that used to be called Indo-China.
  16. [16]Minor Products of Philippine Forests — Brown. W. H. · Bureau of Forestry, Manilla. · 1920 ↩︎A useful guide to some of the plants of the area, though terse on details. The book is out of copyright and can be legally downloaded from the Internet.
  17. [17]Medicinal Plants in Vietnam — Nguyen Van Dan & Doan Thi Nhu · World Health Organisation · 1989 · ISBN 92 9061 101 4 ↩︎An excellent book, giving information on over 200 plants, their medicinal compounds and applications.
  18. [PFAF]Plants for a Future — pfaf.org ↩︎